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# Trigonometry Section 1

Across
If you know the blank, then you must know the signs of the coordinates x and y.
180 degrees minus some positive angle less than 180 degrees
Arc Length divided by some unit of time (t)
The common point of two rays
A ray that signals the beginning of an angle measure, is parallel to the x-axis, with its end point at (0,0), and all other points positive.
If the vertex is on the origin (0,0), it is said to be in this position.
This is the angle measure when the radius is equal to the arc length.
Central angle divided by some unit of time (t)
First part means "measure" and second part means "of triangles"
Down
When theta is between two rays, it is known as this.
90 degrees minus some positive angle less than 90 degrees
A linear unit divided by some unit of time (t)
Theta divided by some unit of time
A ray that signals the end of an angle measure.